Calculating the work done using the amount of heat absorbed and the change in internal energy.

Find the work done, w, when a system absorbs 104 J of heat and its internal energy decreases by 55 J.

Working with enthalpy of formation.

The reaction of 4.49 g of carbon and 9.21 g of oxygen, produced carbon dioxide, and 113.2 kJ of heat. What is the enthalpy of formation of carbon dioxide?

heat

Glucose reacts with oxygen to form carbon dioxide and water: If the heats of formation of glucose , carbon dioxide, and water are -1273.3 kJ mol-1, -393.5 kJ mol-1, and -285.8 kJ mol-1. How many grams of glucose must react in order to release (1.00)(10^3) kJ of heat? What is the difference between bond energy, H minus the ...continues

Working with bond energies.

Calculate the bond energy of the reaction: 2 H2 + O2 ---> 2 H2O

exothermic reaction

Which of the following would be an exothermic processes? 1) Combustion of C2H5OH (ethyl alcohol) moonshine 2) Decomposition of CaCO3 (calcium carbonate) marble, chalk, limestone 3) Dehydration of CuSO4.5H20 (copper(II) sulfate pentahydrate) "blue-shtone"

Calculating the change in enthalpy (delta H) using bond energies.

Estimate the change in enthalpy for the following reaction using bond energies: 2 H2 + O2 ---> 2 H2O

Working with heats of formation to calculate the amount of grams required to release a specific amount of heat.

Glucose reacts with oxygen to form carbon dioxide and water: If the heat of formation of glucose, carbon dioxide, and water are -1273.3 kJ mol-1, -393.5 kJ mol-1 and -285.8kJ mol-1. How many grams of glucose must react in order to release (1.00)(10^3)kJ of heat?

Calculating the difference between changes in enthalpy and energy.

The reaction of 4.49 g of carbon and 9.21 g of oxygen, produced carbon dioxide, and 113.2 kJ of heat. What is the difference between the change of H(enthalpy) minus the change of E(energy)?

Need a value

I need the specific heat capacity of H2 gas. (To be used in q = mc(delta T). It is the "c" value, and a constant value specific to hydrogen gas.

Chemistry review: specific heat, density, photon energy, wavelength characteristics, gas laws and conversion problems.

See attachment for problems. Chemistry review questions: specific heat, density, photon energy, wavelength characteristics, gas laws and unit conversion.